Vegetative key to the families

INSECTIVEROUS PLANTS with either sticky glands on the leaves (Fig.28), or with bladders 1–2 mm long on submerged or subterranean leaves (Fig. 28). Very delicate herbs
Leaves with glandular hairs, in a rosette and/or ascending and bifurcating (Fig. 24) Droseraceae
Leaves (subterranean or in water) with bladders 1–2 mm long (Fig. 24) Lentibulariaceae